/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
Get list of users invited to a party that have not yet responded
true if entries found
bool GetPendingInvitedUsers ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [FOnlinePartyId](API\Plugins\OnlineSubsystem\FOnlinePartyId) & PartyId, [TArray](API\Runtime\Core\Containers\TArray)< FUniqueNetIdRef > & OutPendingInvitedUserArray ) const